JWST Diffraction Stars (James Webb Space Telescope) – Anti-Stringing Edition (MK4 & Ultraglow)

Bring the iconic look of the James Webb Space Telescope (JWST) to your home! This set of stars, featuring the signature diffraction spikes, is specifically engineered for a fast, clean, and frustration-free printing experience.

I went through several design iterations to get the proportions just right, testing them directly on my wall until I was satisfied with the aesthetic. I have included most of these versions here so you can choose the one that fits your style best.

Tip: My personal favorite (the one currently on my wall) is marked as "final".

Why download this specific model?

Many star models are a nightmare to print because they cause constant retractions and travel moves, leading to "hairy" prints. This design has been optimized from the ground up to minimize travel moves and retractions.

• Master of "Messy" Filaments: Specifically tuned for Ultraglow (glow-in-the-dark) materials, which are notorious for extreme stringing.

• 0.6 mm Nozzle Optimization: The wall thickness is designed so the printer can trace the perimeter in one continuous path. This results in a flawless surface with no visible seams.

• MK4 Verified: Tested and perfected on the Original Prusa MK4 to take full advantage of its precision.

Ready-to-Print 3MF Included

To make things even easier, I have included a pre-configured 3MF file specifically for the Prusa MK4 (0.6 mm nozzle) using PETG Ultraglow.

• How to use: Simply open the file, choose your favorite star version, and duplicate it 6 times as shown in the example layout. All the optimal settings (sequential printing, etc.) are already baked in!

Recommended Settings for manual setup

To get that "straight out of NASA" look, I recommend the following slicer settings:

1. Avoid Crossing Perimeters: ON. This is a must for glow-in-the-dark filaments. It keeps the nozzle movement inside the model, hiding any potential wisps of stringing internally.

2. Complete Individual Objects (Sequential Printing): If you are printing the whole set, print them one by one. This eliminates travel moves between different stars—the #1 cause of mess when using Ultraglow materials.

3. Nozzle Size: Optimized for 0.6 mm for a single-pass perimeter, but it works beautifully with a 0.4 mm nozzle as well.

4. Material: Perfect for Prusament PETG Ultraglow

If you enjoy the model, please consider uploading a "Make." Seeing your prints in the wild (especially glowing ones!) is the best reward.